WIN7 system computer clicks off but turns off

1, there may be a computer virus, the system to carry out the whole inventory of drugs, the removal of computer Trojan virus;

2, try to use the command to shut down the machine, press Win+r to open the operation, input cmd, carriage return;

3, in the cmd input shutdown/s, click Enter, to see whether the machine can be shut down;

4, disables the Group Policy setting, enters gpedit.msc in the operation, the point returns;

5, double-click the "User Configuration" under the "Management template";

6, and then double-click the "Start" menu and taskbar;

7. In the list on the right, find the "Remove and block access shutdown, restart, sleep and Hibernate commands" and double-click to open;

8, select "Disabled" and click OK, and then see if you can turn off the machine.